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Double-medium fruit-and-vegetable rapid pre-cooling device and control method

A dual-medium, fruit-and-vegetable technology, which is applied to household refrigeration devices, cooling fluid circulation devices, and fruit/vegetable preservation through freezing/refrigerating, can solve problems such as rising electricity costs, reduce capacity, reduce cooling energy consumption, and shorten cooling time Effect

Pending Publication Date: 2017-09-22
GUANGDONG PROVINCE MODERN AGRI EQUIP RES INST +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

On the other hand, the shortage of energy causes the electricity bill to rise

Method used

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  • Double-medium fruit-and-vegetable rapid pre-cooling device and control method

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Effect test

Embodiment 1

[0038] Such as figure 1 As shown, the present invention discloses a dual-medium fruit and vegetable rapid precooling device. The precooling device is installed in the cold storage 13, and the energy efficiency ratio of the refrigeration unit is improved and the purpose of rapid cooling is achieved by calling the cold water cooling unit in idle time. The pre-cooling device mainly includes a refrigeration unit unit installed outside the cold storage 13, a direct evaporative cooling unit for reducing the temperature of the cold storage 13 by evaporating and absorbing heat from the refrigerant, a cold water cooling unit for further reducing the temperature of the cold storage 13 through cold water cooling, and a direct cooling unit for calling The control unit for the evaporative cooling unit and / or the cold water cooling unit; the refrigeration unit is connected in series with the direct evaporative cooling unit, and the cold water cooling unit is connected in parallel with the re...

Embodiment 2

[0057] The initial temperature of the material before storage is TA = 35°C, the air temperature of the air cooler is TB = 15°C, the target temperature of the material after pre-cooling is TC = 10°C, the water temperature in the water storage tank 11 can be reduced to TD = 5°C, and the air cooler The cooling temperature that can be provided to the warehouse is 6-10°C. Thermal calculations show that the evaporation temperature is directly proportional to the cooling capacity and cooling efficiency. In a specific refrigeration system, when the evaporation temperature increases by 1°C, the cooling efficiency of the equipment can be increased by 3% under the same conditions. In the initial stage of pre-cooling, when the cooling load is large, the air-cooled refrigeration system can be turned on. At this time, the evaporation temperature is high, and the cooling efficiency under corresponding working conditions is high.

[0058]In the traditional cold storage 13, as the temperature ...

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Abstract

The invention discloses a double-medium fruit-and-vegetable rapid pre-cooling device and a control method. The device comprises a refrigerating-unit unit mounted on the outer side of a refrigeration storage, a direct evaporating cooling unit utilizing evaporating heat absorption of a refrigerant to reduce the temperature of the refrigeration storage, a cold water cooling unit for further reducing the temperature of the refrigeration storage in a cold water cooling mode, and a control unit for invoking the direct evaporating cooling unit and / or the cold water cooling unit to work. The device comprises three circular loops of air cooling refrigeration, water refrigeration and cold water cooling; according to air cooling refrigeration circulation, dry and cold air is delivered into the refrigeration storage through an air cooler, and circulating is continuously conducted to achieve cooling; according to water refrigeration circulation, a water storage tank is cooled through the refrigerant, and cold water is prepared; according to cold water cooling circulation, the cold water is utilized to further cool the refrigeration storage through a second air cooler; and when the refrigeration storage needs to be rapidly cooled, the cooling speed of the refrigeration storage can be increased by simultaneously opening air cooling refrigeration circulation and cold water cooling circulation. The double-medium fruit-and-vegetable rapid pre-cooling device and the control method further have the advantages of being simple in structure, easy to implement and high in energy efficiency ratio.

Description

technical field [0001] The invention relates to the field of refrigeration equipment, in particular to a refrigeration device and a control method for storing and precooling cold storage such as fruits and vegetables by using dual media. Background technique [0002] At present, with the improvement of people's living standards, the market demand continues to increase, and the construction speed and production scale of cold storage continue to increase. Since the introduction of the "Agricultural Products Cold Chain Logistics Development Plan" in 2010, my country's cold storage market has entered an unprecedented construction boom. In October 2014, the State Council issued the "Medium and Long-Term Plan for the Development of Logistics Industry (2014-2020)", which promoted the development of cold storage construction in the direction of scale, standardization and modernization. The development of a country's refrigeration industry can reflect the level of people's living st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25D13/00F25D19/04F25D29/00A23B7/04
CPCA23B7/04F25D13/00F25D19/04F25D29/00F25D2600/06Y02P60/85
Inventor 刘清化陈永春李浩权胡光华汤石生龚丽赵锡和龙成树涂桢楷刘军曾小辉张林泉吴耀森
Owner GUANGDONG PROVINCE MODERN AGRI EQUIP RES INST
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